<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="angular.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="personCtrl">
    名：<input type="text" ng-model="firstName"><br>
    姓：<input type="text" ng-model="lastName"><br>
    <br>
    姓名：{{fullName()}}
</div>
<!--<script>
    var app = angular.module("myApp", []);
    app.controller("personCtrl",function($scope) {
        $scope.firstName = "John";
        $scope.lastName = "Doe";
        $scope.fullName=function() {
            return $scope.firstName + " " + $scope.lastName;
        };
    });
</script>-->
</body>
</html>